Solution : https://service.sap.com/sap/support/notes/758798 (SAP Service marketplace login required)
Key words :
generate termination 'dynpro_msg_in_help', source code corrections, batch split items, respective items, error occurs, delete deliveries, material block, availability check, material level, terms vl02n
Related Notes :
848294 | DYNPRO_MSG_IN_HELP when you delete inbound deliveries |
521409 | Problems with deleting delivery items online |
154550 | Dump when you save a delivery:DYNPRO_MSG_IN_HELP |